Replaceable ladder rung



' P 1931. s. M. PETERS ET AL 1,823,509

' REPLACEABLE LADDER RUNG Filed March 27, 1929 BY mam (M Patented Sept.15, 1931 UNITED STATES PATENT OFFICE SPENCER M. PETERS AND ARTHUR B.ROCHESTER, OF SPRINGFIELD, ILLINOIS; SAID ROCHESTER ASSIGNOR T SAIDPETERS REPLACEABLE LADDER RUNG Application filed March 27, 1923. SerialNo. 350,338.

Our invention relates to ladder rungs of firm and substantialconstruction; an object being in this device to provide a ladder rungneat in appearance, easily and quickly mounted, or detached, easilyreplaceable in any ladder, economical to manufacture, as well as strongand durable when in normal use.

We attain the. objects of our ladder rung 0 in the device described inthe annexed specification, recited in the claims and illustrated in theaccompanying drawings in which like reference numerals indicate likeparts in the several figures. a

Referring to the figures:

Figure 1- is a vertical half section of one of-our ladder rungs shown ina manner in which it is attached to the ladder stiles on which it isoperatively supported.

Figure 2 is a perspective of one of our ladder rungs.

Figure 3 is a perspective of a portion of a ladder showing our rung asit appears in operative position secured to the stiles of a ladder. c I

Figure 4 is a cross section of our rung showing the structural detail ofan end show ing the manner in which it fits against a ladder stile towhich it is adapted to be bolted.

Referring now in detail to the construction of our ladder rung and thepreferred manner of assembling and using the same we provide as anintegral structure, a channel bar bent into the form of a U bar with theinner portion of the channel turned to the inside to form a relativelyshort angle 1- and 2 of the main body -3 of our rung.

At the respective ends of the U turns are integral spurs 4- and 5outwardly turned and adapted to normally pierce the inner faces of therespective ladder stiles -6 and 7.

Each of these U turns is provided with a bolt hole 8 or -9 respectivelythrough which bolts 10 and 11 are secured in anchoring the rungsubstantially to ladder stiles 6 and -.-7 as shown in Figure 1.

Our ladder rung is adapted to be successfully operative on almost anystyle of ladder in ordinary use and possesses special merit in itsdesign of construction which enables it to be quickly and convenientlyput on or taken off of a ladder without materially disturbing the otherrungs of the ladder.

Spurs 4 and -5- of our rung hold the ladder rung substantially inoperative position without turning while the manner of guarding nuts -12and 13 on bolts 10 and 1l in between channel flanges -14-14- and 1515 ofchannel bar 1 is a substantial and practical manner of holding the nutin place from turning.

It will also be observed that additional' strength is obtained in thestructure of our rung by turning the channel side of the rung to theinside.

An addition merit in our rung is also found in the substantial bracingsurface provided at each end of the rung where the angles turn at theend and fit snugly up against the inner faces of the stiles of theladder. This bracing surface of the rung held as it is so firmly bybolts 10 and -1l extending through the stiles 6 and 7 provide anefiective means of holding the ladder to which the rung is attached wellbraced tending to reduce to a minimum the weaving; so commonly found inladders after they have been used for a short period of time:

It may be possible to change, somewhat, certain minor details in thestructure of our ladder rung without departing from the spirit and scopeof our invention.

Having thus described the nature of our invention, what we claim is:

As a new article of manufacture a ladder rung formed of a Ushapedchannel bar whose' ends are bent at right angles to the intermediatebody so as to bring the sides of the channel on the inside of the curveat the bend said bent ends forming integral brackets to be secured toladder stiles and each provided with a bolt hole; said sides of thechannel on said brackets adapted to provide holding means to prevent abolt head or nut from turning when fitted therebetween; said bentends ofsaid channel bar each provided with an integral outwardly extendingterminal spur adapted to pierce the inner face of a ladder stile When innormal use.

5 In Witness whereof, We hereunto set our hands this 25th day of March,1929.

SPENCER, M. PETERS. ARTHUR B. ROCHESTER.

